What does semen in panties look like?

Panties are tested more than all other items
combined. Other tested items include pants, feminine
pads and
tampons, bed linens, scrapings, washcloths, bathrobes, t-shirts,
pants, blouses, and
lingerie.

How Can I Tell If There Is Semen on Her Panties?

There are many different types of stains on panties. Here
are a few examples of stains and the outcome of our laboratory test.
Twenty percent (27%) of all tested articles are positive for
semen.